Fragments can be set up to expire at different periods, or not cache at all.

可以为段设置不同的到期时间，或者根本不缓存。

youdao

The autonomous cycle length varies at different periods in the life span.

自动周期的年度随人生不同阶段而不同。

youdao

The values-orientation of conflict of laws theories at different periods are very different.

不同历史时期的冲突法学说具有不同的价值追求。

youdao

The trouble with the etymology of theory and the way in which the word has been used traditionally is that sometimes it actually means practice, and then at other historical periods it means something very different from practice, something typically from which practice is derived.

理论这个词在词源,和传统的使用方法上的复杂之处在于,它有时候指的是实践，但在特定的历史时期,它指的是和实践非常不同的东西，也就是实践产生的依据。

耶鲁公开课 - 文学理论导论课程节选

The manuscripts are written in many languages from the Oriental peoples, such as Uzbek, Arabic, Persian, Tajik, Urdu, Pashtu, Azerbaijani, Turkish, Tatar, Turkmen, and Uyghur and then translated in different at different periods, showing us the interrelations of the people, enhanced by the Silk Road.

UNESCO: CULTURE

First of all, it is critical to look for divergences on at least two different time periods, as in strong uptrends, you will often see divergences in the daily charts but not the weekly charts.

FORBES: Gold's Top: A Win for Divergence Analysis

History reminds us that different segments of the market go through extended periods of outperformance at different times.

FORBES: Forget Market Predictions, Invest On Proof